PVC/α-MSAN共混物的性能研究  

Research on properties of PVC/α-MSAN blends

作　　者：徐国忠 张振[2] 

机构地区：[1]南京华格电汽塑业有限公司,江苏南京210014 [2]南京工业大学材料科学与工程学院,江苏南京210009

出　　处：《聚氯乙烯》2010年第12期16-18,22,共4页Polyvinyl Chloride

基　　金：江苏省科技成果转化专项资金资助项目(BA2010017)

摘　　要：采用机械共混法制备了PVC与α-甲基苯乙烯类-丙烯腈共聚物(α-MSAN)共混材料,探讨了α-MSAN用量对共混材料的力学性能、耐热性能和加工性能的影响。结果表明:α-MSAN可以改善共混材料的耐热性能和加工性能;随着α-MSAN用量的增多,共混材料的热变形温度(最大弯曲正应力分别为1.80 MPa和0.45MPa)、拉伸强度、弯曲强度、弯曲模量和熔体流动速率上升,而冲击强度、断裂伸长率下降。综合考虑性能与成本等因素,α-MSAN用量为30份最佳,此时,共混材料的热变形温度由72.4℃提高至81.6℃(最大弯曲正应力为1.80 MPa)。PVC/α-methylstyrene-acrylonitrile（α-MSAN） blends were prepared by mechanical blending,and influences of α-methylstyrene-acrylonitrile dosages on the mechanical properties,heat resistance and processing properties of the blends were investigated.The results show that：（1） α-MSAN can improve the heat resistance and processing properties of the blends;（2） with the increase of α-MSAN dosages,the heat deformation temperature（with the highest bending normal stress 1.80 MPa and 0.45 MPa individually）,tensile strength,flexural strength,bend modulus and melt flow rate are increased,while the impact strength and elongation at break are reduced.Considering comprehensively properties and cost,the optimum dosages of α-methylstyrene-acrylonitrile are 30 parts,while the heat deformation temperature（with the highest bending normal stress 1.80 MPa） of blends is improved from 72.4 ℃ to 81.6 ℃.

关 键 词：PVC α-甲基苯乙烯类-丙烯腈共聚物 共混 耐热性能 

分 类 号：TQ325.3[化学工程—合成树脂塑料工业]